CN103991249A

CN103991249A - Full barrier film and vacuum full barrier chamber/bag, and production process thereof

Info

Publication number: CN103991249A
Application number: CN201410172170.8A
Authority: CN
Inventors: 王胜荣; 戚政权
Original assignee: Yuan Hai Plasthetics Co Ltd Of City Of Kunshan
Current assignee: Yuan Hai Plasthetics Co Ltd Of City Of Kunshan
Priority date: 2014-04-28
Filing date: 2014-04-28
Publication date: 2014-08-20

Abstract

The invention relates to the field of water-gas isolation and safety in industries like food, drug safety, green building, aviation, spaceflight, energy, the war industry, scientific research and the manufacturing industry, and provides a full barrier film and a vacuum full barrier chamber/bag and a production process thereof. The film is prepared through compounding of pure aluminum glass fiber cloth, pure aluminum brown paper, multilayer polyvinylidene chloride (PVDC), polyvinyl alcohol (PVA for short), polyethylene terephthalate (PET), pure aluminum (Al) and high pressure polyethylene (LDPE), polypropylene (PP) or ethane-vinyl acetate copolymer (EVA). A multi-layer buffer structure has a full barrier effect on gas and water vapor and enables the leakage value of gas and water vapor to be zero. The full barrier film has significant influence in vacuum insulation, quality guaranteeing and efficiency guaranteeing of products like bags, bottles and boxes prepared from the full barrier film and exerts substantial effects; due to usage of a comprehensive compound manner, the full barrier film has strong structural capacity and excellent weatherability, can meet production requirements of hot forming and presents extremely excellent barrier performance and outstanding thermal deformation temperature when used in products and long-acting system engineering having extremely high barrier requirements.

Description

A kind of full Obstruct membrane and vacuum intercept chamber/bag and production technology entirely

Technical field

The present invention relates to high heat energy resistant energy-saving and the security fields of the industries such as food security, drug safety, green building, Aeronautics and Astronautics, the energy, military project, scientific investigation, process industry, particularly a kind of composite membrane of full obstruct and can keep lastingly full obstruct chamber/bag and the production technology of vacuum.

Background technology

From the relevant document known use in existing domestic and international market or disclosed, a plurality of fields relate to guarantee the quality has all used high barrier material with safety and high heat energy resistant energy-saving, to reach obstruct gas, water vapour, sound, microwave, illumination, microorganism etc., its barrier property of these materials just differs, the material that obstruct value is very low also has certain penetrating rate, it is practical that these materials are applicable to short engineering of obstruct time, but for during long obstruct field be just difficult to effectiveness, can mislead application on the contrary, thereby produce bad consequence, for example, guaranteeing the quality and safety of food, the effectiveness of medicine and safety, the vacuum heat-insulating plate that greening building energy saving fire-retardant decorative is used, the vacuum heat-insulating plate of the energy-conservation use of refrigerating thermal-insulation, the wall bodies such as the removable bin of applying under the adverse circumstances such as high and cold high heat intercept vacuum heat-insulating plate etc., chamber/bag that this series products is used is by glass fabric, aluminium foil film, PET, PA, PVC, EVOH, PC, PE, the Material claddings such as PP form, part material has certain high barrier, complex method has the stream court of a feudal ruler, gluing, co-extrusion, the methods such as thermosol closes, the Obstruct membrane that these methods form and chamber/bag all ubiquity short-term are difficult to find recessive penetrating defect: first, material body compactness is low, there is in various degree the penetrating objective reality of micropore, secondly, adhesive means improperly composite membrane is subject to the easy creeping deformation of external environment influence body, form the shearing force of storeroom, cause film bulk structure intensity to decline, there will be severe lamination, also be to affect the main cause that barriering effect reduces, easily make the cavity material that is applied to vacuum form miniature loosening, be difficult to guarantee persistence vacuum, insulation effect slowly reduces immediately, the frame for movement power of plate body also declines to some extent, the flatness of plate face also can be out of shape, then cause the related reduction of source structure power with engineering wall body, add the chemical substance corrosion of body of wall and the impact of natural environment, very easily form ghost or aliquation, year can slowly come off long afterwards, accomplish to allow vacuum heat-insulation plate and building material be difficult to realize with the life-span, in addition, be applied in easy infection microorganism on food and rotten and taint of odour, be used in and on medicine, lose due effectiveness, recessiveness is detrimental to health and safety.

Summary of the invention

The object of the present invention is to provide a kind of film and vacuum that can entirely intercept gas, water vapour, peculiar smell, microorganism etc. entirely to intercept chamber/bag and production technology, storeroom strong adhesion, film body packing is high, without penetrating, high burning performance grade, high security (without harmful toxicant), there is better stretching toughness, weatherability, corrosion resistance, impact resistance, film body can be resisted thermoplastic shaping and impact indeformable grade for physical index, be applied to field widely, particularly need the long-term system engineering intercepting, cost of manufacture is cheap.

Chamber/containers such as bag made from previous materials can persistence vacuum, have high burning performance grade, high heat distortion temperature, particularly can adapt to the combination process of thermoplastic material, for example, injection moulding composite molding technique, also there will not be Yin Wendu and environment and is out of shape aliquation, the problems such as separation, keep vacuum cavity source structure intensity and flatness, in addition, can also meet the requirement of automation filling core and packing.

The present invention adopts such method to realize: preferred film or moulding material, fine aluminium glass fiber cloth, fine aluminium composite flame-proof brown paper, polyvinyl alcohol (being called for short PVA), polyvinylidene chloride (PVDC), PET (PET), fine aluminium (AI), polyethylene from high pressure process (LDPE), polypropylene (PP) or ethylene-vinyl acetate copolymer (EVA) etc.These materials all have significant advantage separately, fine aluminium glass fibre fire-protection rating is not for firing, thermal conductivity factor is low, heat distortion temperature is high, corrosion-resistant, shock resistance, frame for movement power is strong, fine aluminium composite kraft paper absorption affinity is strong, lucifuge capacity superiority, heat transfer rate is slow, heat-proof quality is good, heat distortion temperature is high, the difficult combustion of fire-protection rating, a little less than frame for movement power, barrier is high, polyvinylidene chloride (PVDC) is high barrier very, resistance to combustion, corrosion-resistant, but light resistance is poor, polyvinyl alcohol (PVA) compactness is better than polyvinylidene chloride (PVDC), resistance oxygen ability is high, but a little less than the gas ability that blocks water, (except under drying condition), flammable, PET (PET) transparent effect is good, corona effects is good, being conducive to metal material conforms to, fine aluminium (AI) compactness is higher than plastics, high barrier, it is fast that heat is transmitted reflecting properties, polyethylene from high pressure process (LDPE), ethylene-vinyl acetate copolymer (EVA), polypropylene (PP) heat distortion temperature is low, bond properties is strong.

Combination process is respectively:

A. the compound pure aluminium film of glass fabric

B. the compound pure aluminium film of fire-retardant brown paper one side, simultaneously applies polyvinylidene chloride (PVDC)

C. the double-coated polyvinylidene chloride (PVDC) of PET (PET)

D. the one side of polyethylene from high pressure process, (LDPE), polypropylene (PP) or ethylene-vinyl acetate copolymer (EVA) film is carried out fine aluminium (AI) vacuum plating or coated polyvinyl alcohol (PVA)

So far obtain the composite of multiple intermediate, finally successively A, B, C, D extruding glue bond are formed to composite membrane, wherein the aluminum membranous layer of A is on outermost layer (surface), be convenient to puma manipulator absorption, the polyethylene from high pressure process of D (LDPE), polypropylene (PP) or ethylene-vinyl acetate copolymer (EVA), on outermost layer (another surface), are convenient to thermosol adhesive seal.

Polyvinylidene chloride (PVDC) and polyvinyl alcohol (PVA) can be film forming in advance, then carry out compound.

The food stage of the preferred non-toxic material of the aforementioned composite of the present invention, high oxygen index (OI), the incombustible material that self-extinguishment can be strong.

The present invention by said method by the thin-film material of different molecular structures form through electroplating, coating, the extrusion bonded one-tenth composite membrane of thermosol, mutual transparent performance has obtained multilayer buffering, and the physical index of different materials has obtained further compensation, reduced to greatest extent penetrating probability, surface good leveling property, is adsorbed effective, whole burning behavior class and increases, the performances such as weather-proof and acid-alkali-corrosive-resisting are also more remarkable, with this, realize the effect of full obstruct and high burning performance grade.

Many Material claddings film obtained above can be made bottle, sack, box, the containers such as bucket are for food, the lasting obstruct in guarantee the quality effect and other field of medicine, if be applied to the poor occasion of external condition, also need composite protection layer again, for example, greening building energy saving heat-insulation system, bin under the adverse circumstances such as high and cold high temperature, refrigerator, the railway carriage of high-speed flight, the baffle system of the industries such as aircraft, the obstruct engineering of conveyance conduit or anti-leak, if be applied to vacuum, also want compound coelosis/bag, to vacuumize can tolerantly waiting packing material to load into, make vacuum heat-insulating plate, further improve heat rejection ability.

Beneficial effect of the present invention is the full barriering effect of film body gas and penetrating amount 0 value of water vapour, safe, oxygen index (OI) is high, heat distortion temperature is high, can produce more full resistant energy-saving adiabatic, fresh-keeping, guarantee the quality, protect effect, the safety products such as anti-leak, range of application is very extensive, be particularly suitable for carrying out the long-term high request engineering intercepting, the sack of making as raw material, box, the container valid periods such as bucket are long, food is not spoiled, nondiscolouring, never degenerate, expiration date of drug is fully guaranteed, vacuum heat-insulating plate vacuum is lasting, core is not lax, heat rejection effect is long, can with building wall body, aircraft wall body, railway carriage wall body, ship bulkhead body, industrial product wall body is equal to the life-span, plate body size distortion coefficient is little, flatness is high, vacuum chamber/bag can also meet the technique needs of Intelligentized manipulator absorption filling core and vacuum.

Specific embodiment

The present invention is one of preferred implementation method now: first select the high oxygen index (OI) intermediate materials without harmful material, for example, glass fabric, fire-retardant brown paper, polyvinylidene chloride (PVDC), polyvinyl alcohol (PVA), PET (PET) film, fine aluminium (AI), polyethylene from high pressure process (LDPE) or ethylene-vinyl acetate copolymer (EVA) film.

Combination process is respectively:

A. the compound pure aluminium film of glass fabric

C. the double-coated polyvinylidene chloride (PVDC) of PET (PET)

D. the one side of polyethylene from high pressure process (LDPE), polypropylene (PP) or ethylene-vinyl acetate copolymer (EVA) film is carried out fine aluminium (AI) vacuum plating or coated polyvinyl alcohol (PVA)

Wherein polyvinylidene chloride (PVDC) or polyvinyl alcohol (PVA) can be prefabricated film forming.

So far obtain the composite of multiple intermediate, finally successively A, B, C, D extruding glue bond are formed, wherein the aluminum membranous layer of A is at outermost layer, be convenient to puma manipulator absorption, the thermoplasticity such as the polyethylene from high pressure process of D (LDPE) or ethylene-vinyl acetate copolymer (EVA) good at outermost layer, be convenient to thermosol adhesive seal.

Compound mode includes coating, thermoplastic co-extrusion, the complex methods such as the extrusion bonded and vacuum plating of thermosol.

Each material category of aforementioned use comprises does suitably increase and decrease, compound structural order comprises and does to intersect replacement with the number of plies, polyvinylidene chloride (PVDC) can carry out compound to more than one film, individual layer and final size comprise that positive and negative difference also can suitably adjust, just barriering effect and compatibility performance difference to some extent.

By said method by several thin-film materials through thermoplastic, coating, Vacuum Deposition, the extrusion bonded composite membrane that forms of thermosol, the gas of every kind of film, moisture vapor permeability can obtain compensation, and mutual transparent performance has obtained multilayer buffering, has reduced the saturating probability of seepage, so realized full barriering effect, heat distortion temperature significantly improves, and is particularly suitable for the production of thermoplastic shaping technique, and any surface finish has improved the adsorption effect of puma manipulator.

The present invention's laminated film that to sum up technology obtains can be used for food, guaranteeing the quality and the lasting obstruct of protecting effect and other field of medicine, if be applied to vacuum packaging, also to make the chamber/bag that can vacuumize, according to specification that can tolerant product, determine the specification of laminated film, face-to-face three limits are fused in advance, form a chamber that can vacuumize or bag.

The material that the present invention selects can be clear, colorless, mass-tone, inferior look or primary and secondary secondary colour with the composite membrane being composited.

Claims

A full Obstruct membrane and vacuum entirely intercept chamber/bag and its technical characterictic of production technology be by

A. the compound pure aluminium film of glass fabric

B. the compound pure aluminium film of fire-retardant brown paper one side, simultaneously applies polyvinylidene chloride (PVDC)

C. the double-coated polyvinylidene chloride (PVDC) of PET (PET)

D. the one side of polyethylene from high pressure process (LDPE), polypropylene (PP) or ethylene-vinyl acetate copolymer (EVA) film is carried out fine aluminium (AI) vacuum plating or coated polyvinyl alcohol (PVA)

Wherein polyvinylidene chloride (PVDC) or or polyvinyl alcohol (be called for short PVA) can be prefabricated film forming

So far obtain the composite of multiple intermediate, finally successively A, B, C, D extruding glue bond are formed to composite membrane.
2. a kind of full Obstruct membrane according to claim 1 and vacuum intercept aluminum membranous layer that its technical characterictic of composite membrane-forming described in chamber/bag and production technology is also A wherein entirely on outermost layer (surface), be convenient to puma manipulator absorption, the thermoplasticity such as the polyethylene from high pressure process of D (LDPE), polypropylene (PP) or ethylene-vinyl acetate copolymer (EVA) good on outermost layer (another surface), be convenient to thermosol adhesive seal.
3. according to claim 1, a kind of full Obstruct membrane claimed in claim 2 and vacuum, entirely intercept the food stage that its technical characterictic of composite membrane described in chamber/bag and production technology is also the preferred non-toxic material of composite, high oxygen index (OI), the incombustible material that self-extinguishment can be strong.
4. its technical characterictic of composite membrane-forming entirely intercepting described in chamber/bag and production technology according to claim 1, a kind of full Obstruct membrane claimed in claim 2 and vacuum is also that each material category of using comprises and does suitably to increase and decrease with the number of plies, compound structural order comprises doing to intersect to be replaced, polyvinylidene chloride (PVDC) can carry out compound to more than one film, individual layer and final size comprise that positive and negative difference also can suitably adjust, just barriering effect and compatibility performance difference to some extent.
5. its technical characterictic of combination process entirely intercepting described in chamber/bag and production technology according to claim 1, a kind of full Obstruct membrane according to claim 2 and vacuum is also that compound mode includes thermoplastic co-extrusion, coating, the complex methods such as the bonding and vacuum plating of thermosol.
6. according to claim 1, a kind of full Obstruct membrane according to claim 2 and vacuum, entirely intercepting composite membrane-forming described in chamber/bag and production technology and its technical characterictic of combination process is also to be applied to vacuum packaging and also will makes the chamber/bag that can vacuumize, face-to-face three limits are fused in advance, form a chamber that can vacuumize or bag.
7. a kind of full Obstruct membrane according to claim 1 and vacuum entirely intercept composite membrane described in chamber/bag and production technology and its technical characterictic of combination process and are also that many Material claddings film obtained above can make the containers such as bottle, sack, box, bucket.
8. its technical characterictic of composite membrane-forming entirely intercepting described in chamber/bag and production technology according to claim 1, claim 6, a kind of full Obstruct membrane claimed in claim 7 and vacuum is also that the material of selecting and the composite membrane being composited can be clear, colorless, mass-tone, inferior look or primary and secondary secondary colour.
9. composite membrane and its technical characterictic of combination process of according to claim 1, a kind of full Obstruct membrane claimed in claim 6 and vacuum, entirely intercepting described in chamber/bag and production technology are also to make vacuum heat-insulating plate, further improve heat rejection ability.